An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Matz ME, Shell L, Braund K.Matz ME, et al. Among authors: shell l.J Am Vet Med Assoc. 1990 Jul 15;197(2):228-30.J Am Vet Med Assoc. 1990.PMID: 2166727Free article.
Kuntz CA, Waldron D, Martin RA, Shires PK, Moon M, Shell L.Kuntz CA, et al. Among authors: shell l.J Am Anim Hosp Assoc. 1995 Mar-Apr;31(2):142-50. doi: 10.5326/15473317-31-2-142.J Am Anim Hosp Assoc. 1995.PMID: 7773760
Hay WH, Shell LG, Lindsay DS, Dubey JP.Hay WH, et al. Among authors: shell lg.J Am Vet Med Assoc. 1990 Jul 1;197(1):87-9.J Am Vet Med Assoc. 1990.PMID: 2370226Free article.